package lab02.test32;

import java.util.HashMap;
import java.util.Map;

/**
 * Created by mac on 2017/11/9.
 */
public class test {

    public static void main(String[] args) {

        Map<String,String> map = new HashMap<>();


        //向map 中添加数据
        //id—>"1"、name—>"张三"、gender—>"男"、 age—>"25"、love—>"爱学Java"

        map.put("id","1");
        map.put("name","张三");
        map.put("gender","男");
        map.put("age","25");
        map.put("love","爱学java");


        //遍历一个map

        for (Map.Entry<String,String> entry : map.entrySet()){

            System.out.println(entry.getKey() + ":" +entry.getValue());
//            System.out.println(entry.getValue());


        }

        System.out.println("集合的大小：" + map.size());


        //删除集合中的键为age的元素
        for (Map.Entry<String,String> entry : map.entrySet()){

            if (entry.getKey().equals("age")){

                map.remove(entry.getKey());
            }
        }

        System.out.println("集合的大小：" + map.size());


    }



}
